Surface-treating assembly and method of making same



G. A. LYON March 20, 1956 SURFACE-TREATING ASSEMBLY AND METHOD OF MAKINGSAME Original Filed Dec. 29, 1949 10" fizvantar an 4/424 1,; M @"yzW -t5Z5 United States Patent SURFACE-TREATING ASSEMBLY AND METHOD OF MAKINGSAME George Albert Lyon, Detroit, Mich.

Original application December 29, 1949, Serial No. 135,675, now PatentNo. 2,693,064, dated November 2, 1954. Divided and this applicationApril 2, 1954, Serial No. 420,510

8 Claims. (Cl. 51193) This invention relates to an improved manner ofconstruction of a surface-treating wheel by which it is easily andsimply provided with a uniform distribution of surface-treatingmaterial.

This application. is a division of my copending application entitledMethod of Making a Buifing Wheel, filed December 29, 1949, U. S. SerialNo. 135,675, now Patent No. 2,693,064 issued November 2, 1954.

According to this invention a pluarlity of strips of surface-treatingmaterial are disposed at an acute angle across a cable and are thenfolded over the cable so that the opposite ends of each strip aredivergently related, i. e. the ends of each strip are divergent atopposite angles to a plane transverse to the cable, preferably with suchopposite ends extending along lines bisected by a plane transverse tothe cable. Thus the ends of each strip are offset in a directionparallel to the cable.

The opposite ends of each strip may then most preferably be sewedtogether close to the cable and then the cable may be wound on asuitable core so that the strips of surface-treating material projectoutwardly from the core and the opposite ends of each strip will becircumferentially displaced.

' With this arrangement, the total circumferential extent of each stripwill be greater than the extent of the strip at the cable while theangle subtended by the portions of each strip at the periphery of thewheel may be approximately equal to the angle subtended by the portionof the strip at the cable. Accordingly, it is not necessary to bunch,gather or pleat the strips close to the cable and yet a very uniformdistribution of the surface-treating material at the periphery of thewheel may be achieved.

An object of this invention, accordingly, is to provide an improvedsurface-treating assembly in which a cable is wound on a core and aplurality of strips of surfacetreating material are folded over thecable to project outwardly from the core with the opposite ends of eachstrip being divergently related and circumferentially displaced.

Another object of this invention is to provide an improvedsurface-treating assembly in which a plurality of strips ofsurface-treating material are folded over a cable with the cablecrossing each strip at an acute angle.

A further object of this invention is to provide an improvedsurface-treating assembly in which strips of surface-treating materialare folded over a cable with the opposite ends of each strip divergentlyrelated and with such opposite ends sewed together close to the cable.

Still another object of this invention is to provide an improved methodof making a surface-treating assembly.

This invention contemplates other objects, features and advantages whichwill become more fully apparent from the following detailed descriptiontaken in conjunction with the accompanying drawings which illustrates apreferred embodiment and in which:

Figure 1 is a fragmentary and elevational view of a portion of asurface-treating wheel constructed according to the principles of thisinvention;

Figure 2 is a side elevational view, on a reduced scale, of the wheel ofFigure 1;

Figure 3 is an end elevational view of one of the. strips ofsurface-treating material in folded condition, as utilized in the wheelof Figures 1 and 2;

Figure 4 is a plan view of one of the strips of surfacetreatingmaterial, before folding;

Figure 5 is a cross-sectional View of the strip of Figure 4 takensubstantially along line VV of that figure; and

Figure 6 is a perspective view illustrating one manner of this positionof the strips of surface-treating material on a cable prior to windingof the cable on a core.

Reference numeral. 10 generally designates a surfacetreating wheelconstructed according to the principles of this invention. The wheel 10may comprise a cable 11 wound on a core 12 with a plurality of strips 14of surface treating material folded over the cable 11 to projectoutwardly from the core. The core 12 may have an irregular peripheralsurface corresponding to the contour of an article to be surface-treatedwith the radial extent of the strips 14 being uniform and with the core12 being grooved to receive the cable, as more fully described in myabovereferred to copending application of which this application is adivision- According to this invention, each of the strips 14 hasopposite end portions 15 and 16 divergently related so that the terminalends thereof are offset in a direction parallel to the cable 11. Hence,the portions 15 and 16 extend at opposite angles, preferably equal,relative to a plane through the axis of the core 12 and through a midpoint of the strip 14 at the cable 11. Such a plane, accordingly,bisects the angle defined by the medial lines of the opposite endportions 15 and 16.

With this arrangement, the circumferential extent of each strip 14 atthe terminal ends of the portions 15 and 16 thereof is greater than theextent of the strip 14 at the cable 11. Most preferably, the angle ofdivergence of the portions 15 and 16 may be such that the anglesubtended by the terminal ends of the portions 15 and 16 is equal to theangle subtended by the portion of the strip 14 at the cable 11. Withthis relation, the leading edge of one of the portions, for example, theedge 17 of the portion 15, and the trailing edge of the oppositeportion, for example, the edge 18 of the portion 16 will both extendalong a radius of the wheel 10.

With the arrangement as thus far described, it is possible to achieve auniform distribution of surface-treating material at the peripheralboundary of the wheel 10 but bunching, gathering or pleating of thematerial at the cable 11 is not required.

The strips 14 may be constructed in any desired manner and of anydesired material. Preferably, however, each strip may be made up of asheet of buffing material folded over on itself several times and thenjoined together by stitching 19 as illustrated in Figures 4 and 5.

In assembly, the cable 11 may be disposed at an acute angle across thecentral portion of each of the strips 14 as illustrated in Figure 4 andthe opposite end portions 15 and 16 of the strip 14 may then be foldedabout the cable 11 to positions as illustrated in Figures 3 and 6. Mostpreferably, the opposite end portions 15 and 16 are then stitchedtogether close to the cable 11 by stitching 20. This insures that theportions 15 and 16 will be at proper divergent angles when the cable 11is subsequently wound on the core 12.

Instead of placing the strips 14 on the cable 11 and then subsequentlywinding the cable on the core 12, the strips 14 could be folded aboutthe cable 11 as the cable is wound on the core 12. With such anarrangement, however, it is more difiicult to obtain the proper angulardis position of the opposite end portions of the strips and the methodin which the strips are placed about the cable and then stitched closeto the cable and the cable subsequently wound on the core is preferred.

It will be understood that modifications and variations may be effectedwithout departing from the spirit and scope of the novel concepts of thepresent invention.

I claim as my invention:

1. In a surface-treating assembly, a cable adapted to be wound on acore, and a plurality of strips of surfacetreating material folded overthe cable with the ends of each strip being offset in a directionparallel to the cable.

2. In a surface-treating assembly, a cable adapted to be wound on acore, and a plurality of strips of surfacetreating material folded overthe cable with the ends of each strip being divergent at equal oppositeangles to a plane transverse to the cable.

3. In a surface-treating assembly, a core, a cable wound on said core,and a plurality of strips of surafce-treating material folded over thecable to project outwardly from said core with the opposite ends of eachstrip being circumferentially displaced.

4. In a method of making a surface-treating assembly, the step ofplacing a strip of surface-treating material at an acute angle to acable so that the opposite ends of the strip are offset in a directionparallel to the cable, and then folding the strip about the cable.

5. In a method of making a surface-treating assembly, the step ofplacing a strip of surface-treating material at an acute angle to acable so that the opposite ends of the strip are offset in a directionparallel to the cable, then 4 folding the strip about the cable, andthen winding the cable on a core.

6. In a method of making a surface-treating assembly, the step ofplacing a strip of surface-treating material at an acute angle to acable so that the opposite ends of the strip are oifset in a directionparallel to the cable, then folding the strip about the cable, and thensewing the ends of the strip together close to the cable.

7. In a surface-treating assembly, a cable adapted to be wound on acore, and a plurality of strips of surfacetrcating material folded overthe cable with the ends of each strip being offset in a directionparallel to the cable, said strips being joined in the vicinity of saidcable.

8. In a surface-treating assembly, a cable adapted to be wound on acore, surface-treating material folded over the cable including aplurality of strip portions projecting radially outwardly from each sideof the cable, the ends of the strip portions projecting from one side ofthe cable being offset with respect to the ends of the strip portionsprojecting from the other side of the cable in a direction generallyparallel to the cable.

References Cited in the file of this patent UNITED STATES PATENTS533,833 Webster Feb. 5, 1895 981,841 Codman et a1 Jan. 17, 19112,483,879 Churchill Oct. 4, 1949 2,489,193 Mockiewicz Nov. 22, 1949

